Energy Guide

04.24.13 Rev. 0.3a 21

Thermoregulation of the fan (RL5)

hen the delta contactor is powered:

a) air end temperature equal or higher than WT3 = RL5 ON

b) air end temperature below (WT3 – WT4) = RL5 OFF

NOTE: on the right side of the upper row of LCD the character “F” indicates each time the fan is in operation.

Operation of the condensate drain solenoid valve (RL6)

Every time the load solenoid valve is powered (RL4), the condensate drain solenoid valve (RL6) is activated and

deactivated according the time set on the parameters Wt6 and Wt7; besides it’s deactivated every time the load

solenoid valve switches OFF.

NOTE: each time the solenoid valve is working, on the right side of the upper row the LCD visualizes “→

→→

→” to indicate

the condensate drain is in progress.

Operation of RL6 or RL7 set as compressor status

When the compressor is ON the relay is excited, when the compressor is OFF for pressure set reached, the relay is

unexcited.

Quick oil drain

This function is operated when the compressor is loading or unloading and the working pressure is not higher than 2.0

bar.

By the button confirm the “MAINTENANCE”; by the button select “QUICK OIL DRAIN” and confirm by ;

the confirmation is accepted only if the compressor is in “load run” or “unload run” status; in different status the

LCD visualizes the message “START THE COMPRESSOR”; in this status, pushing the button , the compressor

starts and the LCD visualizes the message “QUICK OIL DRAIN NO / YES”; pushing the button the LCD shift

back to menu Maintenance.

If the compressor is in the status requested by this function, the LCD visualizes the message:

“QUICK OIL DRAIN”

“NO / YES”

With the message “NO” blinking, by the buttons and/or select the function needed and confirm it by ;

confirming “NO” the LCD shift back to the message “MAINTENANCE”, confirming “YES” the controller goes to the

function “Quick oil drain”.

The line contactor (RL1) keeps on exciting while the load solenoid valve (RL4) switches off in case the pressure is

higher than 2.0 bar; the LCD visualizes the message “DISCHARGE PRESSURE” (in this status, pushing the button

the controller shift back to menu Maintenance) to be excited again when the pressure goes down 2.0 bar and the

LCD visualizes the message “DRAIN IN PROGRESS” on the first row and the blinking message “STOP” on the second

row.

When the quick oil drain is finished, by the button the compressor stops

Compressor set as start and stop under weekly timer o

peration

When the compressor is set as start and stop under clock, during the OFF time, the LCD visualizes the message “OFF

BY TIMER – NEXT ON : XX:XX”; during the compressor operation the LCD visualizes the clock symbol.

In case to force a start, with no modification of the weekly timer, keep on pushing the button for 3 seconds; to

stop it again, it0s enough to push the button and the compressor comes back under weekly timer operation.

NOTE: the remote start/stop input (IN4) is not operated.